;;
;;Excerpted from "Programming Clojure, Second Edition",
;;published by The Pragmatic Bookshelf.
;;Copyrights apply to this code. It may not be used to create training material, 
;;courses, books, articles, and the like. Contact us if you are in doubt.
;;We make no guarantees that this code is fit for any purpose. 
;;Visit http://www.pragmaticprogrammer.com/titles/shcloj2 for more book information.
;;
(ns examples.multimethods.service-charge-1
  (:require examples.multimethods.account))

; namespace hackery for segregating multiple service-charge impls
(in-ns 'examples.multimethods.account)
(clojure.core/use 'clojure.core)

; bad approach
(defmulti service-charge account-level)
(defmethod service-charge ::Basic [acct]
  (if (= (:tag acct) ::Checking) 25 10))
(defmethod service-charge ::Premium [_] 0)

